From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from firstgate.proxmox.com (firstgate.proxmox.com [212.224.123.68]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by lists.proxmox.com (Postfix) with ESMTPS id 1FD816C5D3 for ; Mon, 29 Mar 2021 15:28:28 +0200 (CEST) Received: from firstgate.proxmox.com (localhost [127.0.0.1]) by firstgate.proxmox.com (Proxmox) with ESMTP id 1171615CA7 for ; Mon, 29 Mar 2021 15:28:28 +0200 (CEST) Received: from mail.ud08.udmedia.de (ud08.udmedia.de [194.117.254.48]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by firstgate.proxmox.com (Proxmox) with ESMTPS id 9F14615C9F for ; Mon, 29 Mar 2021 15:28:27 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=simple; d=aeppelbroe.de; h=from:to :subject:message-id:date:content-type:mime-version; s=k1; bh=ECc IwabX1uyiZl+p6iRsoIw4mKCz5WO/EGIe8IcBSD4=; b=PRefHxTEoiWZpH/RoOm CQF81tnbiDnJgd3kg5smg+oX0SZi77UOnA1MfMHPjUMGHsAEuYWJgjEcXP5s7kUH 9vKPNz/jU5U+7ETLCOzRAcMeq2w/MhP+c6EBeI5pLjEExAWINbwwV+xg1Aas3cLb kOXywyDctdB82Sv4mj0w4lUw= Received: (qmail 1504527 invoked from network); 29 Mar 2021 15:28:21 +0200 Received: by mail.ud08.udmedia.de with ESMTPSA (TLS_AES_256_GCM_SHA384 encrypted, authenticated); 29 Mar 2021 15:28:21 +0200 X-UD-Smtp-Session: ud08?166p2@B1n52qy+oppf3hT8 Received: from localhost (localhost [127.0.0.1]) by baikonur.fritz.box (Postfix) with ESMTP id B2F75D275FF for ; Mon, 29 Mar 2021 15:28:20 +0200 (CEST) X-Virus-Scanned: Debian amavisd-new at baikonur.orbit.local Received: from baikonur.fritz.box ([127.0.0.1]) by localhost (baikonur.fritz.box [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id ArVoNDd9EVKf for ; Mon, 29 Mar 2021 15:28:20 +0200 (CEST) Received: from baikonur (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-256) server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by baikonur.fritz.box (Postfix) with ESMTPS id 75D29D275FB for ; Mon, 29 Mar 2021 15:28:20 +0200 (CEST) User-Agent: EGroupware API 17.1.007 From: Gregor Burck X-Priority: 3 X-Mailer: EGroupware-Mail To: pve-user@pve.proxmox.com Message-ID: <20210329152820.EGroupware._t1Sneg3e4BsuWUv_4EVNL7@heim.aeppelbroe.de> Date: Mon, 29 Mar 2021 15:28:20 +0200 Content-Type: text/plain; charset=utf-8; format=flowed; DelSp=Yes MIME-Version: 1.0 X-SPAM-LEVEL: Spam detection results: 2 AWL -1.070 Adjusted score from AWL reputation of From: address DKIM_INVALID 0.1 DKIM or DK signature exists, but is not valid DKIM_SIGNED 0.1 Message has a DKIM or DK signature, not necessarily valid FORGED_SPF_HELO 2.999 - KAM_DMARC_STATUS 0.01 Test Rule for DKIM or SPF Failure with Strict Alignment RCVD_IN_DNSWL_NONE -0.0001 Sender listed at https://www.dnswl.org/, no trust SPF_HELO_PASS -0.001 SPF: HELO matches SPF record SPF_NONE 0.001 SPF: sender does not publish an SPF Record Subject: [PVE-User] ZFZ questions - performance and caching X-BeenThere: pve-user@lists.proxmox.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: Proxmox VE user list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 29 Mar 2021 13:28:28 -0000 Hi, for calculating an backup server wich should be in worst case additionaly an virtualisation server we thougth about a setup with HDDs and for ZFZ chaching NVMes. We plan all with enterprise products,... I guess following Setup: A 12 3,5 '' bay Server, 6 PVEe sockets, maybee with an 2,5'' Rear entension kit for the OS Backup envirement: 4 (or6) HDDs, 6 (or 8) TB without chaching For virtualisation enviroment: 4 (or6) HDDs, 6 (or 8) TB with NVMe chaching I think, for the backup enviroment there shouldn't be a chaching neccessary, cause here is the network the limitation. The VE part should be a little performer, but how big should the NVMe cache? As I read, it is for the ZFZ log. And how much is the performance increasemnt? Bye Gregor